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 Chemistry Questions

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Q:

Which of the following has pH value 7?

A) Pure Water B) H2SO4
C) Sodium Carbonate D) HCl
 
Answer & Explanation Answer: A) Pure Water

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Q:

Which of the following is a greenhouse gas or a gas which can deplete the ozone layer?

A) CH2ClF B) C2H2
C) PF5 D) COCl2
 
Answer & Explanation Answer: A) CH2ClF

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Q:

Which of the following is not a component of Smog?

A) Volatile organic compounds B) Nitrogen Oxide
C) Sulphur dioxide D) Chlorine oxide
 
Answer & Explanation Answer: D) Chlorine oxide

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Q:

Iron and manganese present as pollutants in water cannot be removed by_____

A) oxidation followed by settling and filtration B) chlorination
C) ion exchange process D) lime soda process or manganese zeolite process
 
Answer & Explanation Answer: B) chlorination

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Q:

Constantan is alloyed from ...... metals.

A) Ni, Ti, Fe, Cr B) Cu, Ni, Mn
C) Ni, Cr, Mn, Fe D) Cu, Ni
 
Answer & Explanation Answer: D) Cu, Ni

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Q:

Which of the following compounds is the strongest acid?

A) p-nitrophenol B) phenol
C) m-nitrophenol D) p-cresol
 
Answer & Explanation Answer: A) p-nitrophenol

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Q:

_______ is an anaesthetic agent.

A) Acetylene B) Glycol
C) Diethylether D) Ethylene
 
Answer & Explanation Answer: C) Diethylether

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Q:

The elements known as primary nutrients for plants

A) Nitrogen, Phosphorus and Potassium B) Nitrogen, Oxygen and Silicon
C) Potassium, Boron and Nitrogen D) Nitrogen, Phosphorus and Iron
 
Answer & Explanation Answer: A) Nitrogen, Phosphorus and Potassium

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